Oscillating universe with quintom matter

Details Oscillating universe with quintom matter Oscillating universe with quintom matter

2008-05-05

arxiv.org/abs/0805.0413v2

Phys.Lett.B666:212-217,2008

Astronomy and Astrophysics

Astrophysics

14 pages, 6 figures, accepted by PLB

Scientific paper

10.1016/j.physletb.2008.07.053

In this paper, we study the possibility of building a model of the oscillating universe with quintom matter in the framework of 4-dimensional Friedmann-Robertson-Walker background. Taking the two-scalar-field quintom model as an example, we find in the model parameter space there are five different types of solutions which correspond to: (I) a cyclic universe with the minimal and maximal values of the scale factor remaining the same in every cycle, (II) an oscillating universe with its minimal and maximal values of the scale factor increasing cycle by cycle, (III) an oscillating universe with its minimal and maximal values of the scale factor decreasing cycle by cycle, (IV) an oscillating universe with its scale factor always increasing, and (V) an oscillating universe with its scale factor always decreasing.

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